7z=8z-9

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Solution for 7z=8z-9 equation: 


Simplifying
7z = 8z + -9

Reorder the terms:
7z = -9 + 8z

Solving
7z = -9 + 8z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-8z' to each side of the equation.
7z + -8z = -9 + 8z + -8z

Combine like terms: 7z + -8z = -1z
-1z = -9 + 8z + -8z

Combine like terms: 8z + -8z = 0
-1z = -9 + 0
-1z = -9

Divide each side by '-1'.
z = 9

Simplifying
z = 9

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